Gasoline pump



May 13 1924.

J. F. DENISON GASOLINE PUMP Filed Jan. 26. 1921 Till.

Patented May 13, 1924.

, UNITED STATES:

PATENT OFFICE.

JULIAN I. DEN ISON, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO ALBERT M. AUSTIN, O'F PIEBMONT, NEW YORK.

GASOLINE PUMP.

Application filed January 2 1921. Serial No. 440,050.

To all whom it may concern:

Be it known that I, JULIAN F. DENISON, a citizen of the United States, and resident of New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Gasoline Pumps, of which the following is a specification.

The invention relates in general to a device for elevating liquids and 1 specifically relates to a combined pump and motor construction constituting an article of manufacture designed to be inserted in a liquid fuel supplying tank for the purpose of elevating the liquid fuel to another receptacle or to the carburetor of an internal combustion engine such as is used in automotive vehicle driving plants.

In such constructions heretofore known, and as illustrated in my Iatent No. 1,320,607 dated Nov. 4, 1919, it has been suggested to position a liquid elevating pump in the tank, to position an actuating motor therefor outside of the tank and to make a connection between the tank and motor by means of a driving rod which must necessarily be of long, thin and therefore of frail 7 construction.

One of the primary objects of this in vention is to provide a simple form of pump construction which can be cheaply and-readily manufactured, which will minimize the movable parts subject to Wear and, in general, will correct certainobjectionable features which have characterized previously known devices of this character such as vi bration in the long driving connection, sparking of the motor in combustible atmospheres and the objectionable presence of electric motors on top of the fuel tank.

Various other objects and advantages of the invention will be in part obvious from an inspection of the accompanying drawings and in part will be more fully set forth in the following particular description of one form of mechanism embodying my invention, and the invention also consists in certain new and novel features of construction and combination of parts hereinafter set forth and claimed.

In the accompanying drawings:

Figure 1 is a view partly in elevation of a preferred embodiment of my invention shglwn installed in a fuel containing tank; an

Figures 2 and 3 are both transverse sectional views taken respectively on the lines 2-2 and 3-3 of Figure 1 looking downwardly as indicated by the arrow.

In. the drawings there is shown a conventional form of main fuel supply tank usually found in automobile constructions and which includes an upper wall 10, bottom wall 11; the upper wall being provided with a conventional form of inlet opening 12 usually utilized for supplying liquid to the tank.

The device particularly forming the subject matter of this invention is illustrated as a unitary article of manufacture adapted to be insertedthrough the inlet opening 12. The article includes a cylindrical form of mechanism containing casing 13 open at its lower end, adapted to be submerged in the liquid in the tank, and sup-ported from a cover plate 15 which is utilized, not only to support the article in position but is also utilized to constitute the usual cover for the inlet opening 12. A single discharge pipe 16 constitutes a spacing sleeve Tibet-ween the cover and the casing so as to position the casing relatively close to the bottom of the tank. The pipe 16 opens through passageways 17 in the cover, which passageway is L-shaped and terminates in a nipple 18 to which may be connected any suitable source of conveyor, indicated in dotted lines at 19, and which leads to the carbureter or other receptacle for receiving the discharged liquid. The lower end of the pipe 16 opens through the head 20 defining the upper end of the casing.

The casing is of a general cylindrical form, opened at its lower end, which end is closed by means of a cover 21 fitted therein. The cover is provided centrally thereof'with an inlet 22 which inlet is screened by means of a removable screen 28 fitted within a depending collar 24 constituting an extension from the cover 21. The cover 21 provides a support for an electric motor 25 contained within the casing and which motor is removable as unit therefrom when the cover 21 is removed. The armature shaft 26 of the motor depends from the motor parts and is provided with an inteally formed extension in the form of a fiat disk 27 constituting a rotatable pump for elevatin the liquid out of the tank. The pump forming disk is provided centrally thereof with a tubular extension 26 fitted in the inlet 22 and constituting a lower, floatin bearing for the armature shaft. The d1sk27 is provided with a diametrically extending passageway 30 opening centrally thereof to the tube 26' which constitutes the intake ofthe pump and discharging at its outer ends into the casing. The pump thus formed acts by the centrifugal action of the rotating disk to force the liquid past the motor thus bathing the motor in the liquid. The liquid is discharged out through the discharge port 31, up through the passageways in the pipe 16 and out through the discharge nozzle 18;

Electric energy is supplied {to the motor through a conductor 32 in the form of a rigid rod which is mounted to extend axially through the cover plate, through the pipe 16 and through the head 20 of the casing. The ends of the rods are insulated respectively from the casing and cover plate by lnsulated bushings 34 and is maintained thereby in spaced relation to the pipe 16.

The lower end of the conductor makes electric contact with the motor through a spring 35 carried by the motor and is moved into engagement with the lower end of the conductor as the motor is positioned in the casing. It is understood, of course,v

that the motor isgrounded on one side and is su plied with ener from some suit able 'ead 36 connected to the plug 37 forming the upper exposed end of the conductor positioned exteriorly of the tank. The tank is provided, if necessary, with an air inlet 38 which may also be utilized to supply the tank with liquid.

In operation, it will be understood that the entire device described including the cover plate is manufactured as a marketable article and is positioned in place on the tank with the lower inlet positioned close to the bottom so as to be operable practically as long as there is any liquid in the tank. As the tank under normal conditions is more or less filled with oil, it will be understood that the oil, even while the pump is not operative, will filter in through the inlet and maintain its level in the pipe 16 thus flooding the motor with the gasoline or other oil orfuel contained in the tank. By suitably closing a circuit (not shown) electric energy is supplied to the motor, the motor in rotating revolves the pump thus forcing the liquid, or oil in the case under discussion, through the I pump past the motor and out of the tank as previously described." By means of a device of the t e described it is appreciated that the submerged condensation has been eliminated and the external appearance of the tank has been largely. preserved with cumbersome motor mountings eliminated. It is further appreciated that it will feed fuel to the engine before the en ine is started and not after the engine turns over as with other similar systems when the supplemental reservoir is empty and further it is not possible for the fuel to siphon or seep back from the carbureter after-the engine is shut off and the pump is always primed.

While I have shown and described and have pointed out in the annexed claims, certain novel features of my invention, it

'will be understood that various omissions,

substitutions and changes in the form and details of the device illustrated and in its operation, may be made by those skilled in the art without departing from the spirit a coverplate for closing said opening a combined electric motor and pump suspended from said plate and positioned through said opening relatively close to the bottom of the tank, a spacing sleeve between the cover and combined motor and pum constituting the discharge pipe from the pump and an electric conductor housed within the sleeve and supplying current to the motor.

2. In a device of the class described, the combination with a tank, of means for elevatin a liquid from said tank, said means inclu ing an electric motor positioned in the tank adjacent the bottom thereof whereby the motor is submerged in the liquid in the tank, and a rod for leading current to the submerged motor, said rod provided with a readily accessible binding -postexterior of the tank.

3. In a device of the V combination with a tank having an opening "1... describedj the in the top thereof, of a mechanism contain- 7 tioned below the level of the liquid in the tank, a motor housed in said casing, a pump housed in sald casing, operatlvely connected to the motor to be driven thereby and having its intake open to the inlet port of the casing, and an electric conductor leading into the tank through said opening contained in the casing and operatively connected to the motor to supply the same.

4. An article of manufacture constituting an insert for installation in a liquid containing tank, and including a pump, a 1110- tor for driving the same and means for suspending the motor in the tank.

5. An article of manufacture including a unit adapted to be sub-merged below the level of a body of liquid and including an electric motor and a pump operatively connected to be driven thereby, and a conducting rod having one end operatively connected to the motor to supply the same and adapted to have its other end connected to a sourceof electric energy in spaced relation to the motor.

6. In a device of the class described, the combination of a cylindrical open bottom mechanism containing casing, a cover for closing the bottom of the casing provided with an inlet, an electric motor mounted in said casing and removable as a unit therefrom through the open end when uncovered and having its armature extended and journalled in said inlet, said extended portion of the armature provided with a radially extending passageway open at one end to said inlet and open at the opposite end into said casing.

7. In a device of the class described, the combination of a mechanism containing casing having a bottom wall, provided with an inlet, an electric motor mounted in said casing and having its armature journalled in said inlet, said extended portion of the armature within the casing provided with a radially extending passageway open at one end to said inlet and open at the opposite end into said casin to form a pump.

8. A pump for drawing gasoline or the like from a tank, said pump including an upstanding discharge pipe provided at its upper end with means for mounting the same in suspended position in the tank and provided at its lower end with a combined electric motor and pump containing casing having an intake opening adapted to be positioned below the liquid level in the tank and an electric conductor in said pipe leading to the motor.

9. .111 a device of the class described, the combination of a discharge pipe, a mechanism containing casing open to one end of the pipe and provided with a liquid inlet and with an opening, a conductor in said pipe extending into the casing, a unit comprising a combined pump and an electric motor thereforinsertable in said casing through its opening and means for providing a connection between the motor and the conductor.

10. In a device of the class described, the combination of a discharge pipe, at mechanism containing casing open to one end of the pipe and provided with a liquid inlet and with an opening, a conductor in said pipe extending into the casin a unit comprising a combined pump, an electric motor theretor insert-able in said casing through its opening, means for providing a connection between the motor and the conductor and a closure for the opening constituting a support for the combined pump and motor.

Signed at New Haven in the county of New Haven and State of Connecticut this 18th day of January, A. D. 1921.

JULIAN F. DENISON. 

